(论文)扫描电子显微镜、透射电子显微镜的表征可进一步证实了这一点。电化学性能测试可显示微/介孔结构、Ni摻杂均能不同程度地提高活性表面积、OER活性，降低Tafel斜率且符合文献值(6 OmV/dec)的...

AbstractAcid pickling wastewater is the wastewater generated when metal surfaceoxides are treated by acid pickling with sulfuric acid,nitric acid,hydrochloric acid,hydrofluoric aci...

Weld surface appearance detection based on laser rangingAbstractThe appearance of the welded surface is the most basic and importantcomponent to control the quality of the welding....

的果实分布密度比开心形树高几倍到几十倍，而47年生树的差异不太明显。5人工授粉明显提高库尔勒香梨的座果率，但萼片脱落与人工授粉之间没有直接关系。在宏观上，萼片脱落主要与树势有关，营养...

西北工业大学博士学位论文处理，采用ummers法制备了氧化石墨烯，经分析表征得出氧化石墨烯呈半透明薄纱片层状结构，厚度在1m左右，其表面含有大量羧基和羟基等活性官能。以氧化石墨烯的沉积率为...

北京理工大学珠海学院2020届本科生毕业设计AbstractAcrylonitrile (AN)is a widely used chemical raw material and is used in variousproduction fields.With the growing demand for acrylon...

北京理工大学珠海学院2020届本科生毕业设计Process Design of Producing Biodiesel from Waste Oil withAnnual Output of 10,000 TonsAbstractWith the rapid expansiont of biodiesel industry...

北京理工大学珠海学院2020届本科生毕业设计The graduation project's mission is to make a production plant design,whose annual output is 4,000 tons of phytase preparation.AbstractThis ...

长沙医学院本科生毕业论文〔设计)AbstractObjective:To study the extraction process optimization and bacteriostasis of threekinds of effective components of scented tea.Through differ...

毕业设计1.前言我国的磷肥工业起步较晚。20世纪50年代在南京和太原兴建了两个大型磷肥厂，主要生产过磷酸钙：20世纪60年代初，开始发展钙镁磷肥：20世纪80年代以来，磷酸铵和硝酸磷肥相继投产，...